I found the easiest way to find out what motherboard I have is to open the case and have a look (it might also be reported in the BIOS, I don't remember).
If you just want to find out what sound card you have, then just do:
lspci | grep -i audio

You don't need to learn anything, or even type anything. Open a terminal then copy and paste the command from the reply. Maybe three mouse clicks, which is quicker than doing it with most GUI programs.

The command line is an advantage to be embraced, not a foreign land full of dragons.

"Insanity: doing the same thing over and over again and expecting different results." (Albert Einstein)

Answering questions with a single line command that can be cut and pasted into a terminal is easier than writing half a page of "click this, select that" descriptions.
Actually, you often see that on windows forums as well, as most programs and config tools can be launched from the command line.
In fact there are some tools in windows that only work properly from the CLI.

The sig between the asterisks is so cool that only REALLY COOL people can even see it!